what kind of bugs are they? b/c it may depend on what kind of bug it is, and what kind of spray your using. check the walls and the floor very carefully b/c they have to be getting in from some where and patch the spot where there coming from. and if worse comes to worse you may have to have an exterminator come and spray for the bugs.

I don’t mean to sound mean but spiders follow flys. By that I don’t mean that you never clean out you rodents or they stink I simply mean that flys must be somewhere for spiders to survive or want to be there. And the slightest smell of something rotting could bring them or the smell of your babies. It could even be weather changes bring them in. The numbers are endless but depending on what rodents you have it could even bring advatages such as mice or rats will eat them and may be healther from it. I can’t think that small spiders will harm them but it depends on the spiders or other insect that are coming in, as someone mentioned before if you find any holes fill them up.

i am not afraid of spiders, in fact i find them very interesting, so i have spent a lot of time watching the spiders around my house, i have noticed that they tend to be where there are ants, if you find any ants in your basement then getting ride of them might be helpfull, the best way i have found for getting rid of them is finding where they get into the house and cualking up the crack they are entering in from also even though you never had spiders befor it might not be related to your pets, a spider may have gotten into the basement and laid eggs there wich would cause there to suddenly be lots of spiders, because i like them i have never looked into how to get rid of them, it sounds very stresfull for you though, i wish you luck in finding a sollution